I agree the Bridgestones aren't good in the wet (or the dry tbh!), but I've still had this with the Falkens (albeit, to a much lesser degree) in the wet.
You just have to be aware that if you're giving it a lot of beans in the wet, on a bend (eg. when straightening out of a round about), that the rear end may step out a little as it has momentum. I tend to feed the power out gently and stay alert for any twitches if I try this. Tbh, 50% throttle is usually quick enough to get around most people anyway in this circumstance.